Accessory mount for a firearm and related methods

ABSTRACT

A firearm accessory mount for a take-down rifle is disclosed. The mount has a first portion having an accessory interface, and a second portion opposing the first portion. The second portion has a locking block with a proximal end and a distal end. The proximal end is shaped and positioned to engage a receiver assembly of the take-down rifle. At least one of the first portion or the second portion has a barrel engagement surface. A related method is also disclosed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Provisional Application No.62/357,245 filed on Jun. 30, 2016 and entitled “ACCESSORY MOUNT FOR AFIREARM AND RELATED METHODS,” the entire disclosure of which is herebyincorporated by reference for all proper purposes.

FIELD

The present disclosure relates to firearms. In particular, but not byway of limitation, the present disclosure relates to systems and methodsfor mounting an optic to a firearm.

BACKGROUND

Historically, iron sights have been mounted to barrels, so as to providea means for aiming the firearm. Iron sights continue to be a reliable,light-weight, and low cost method. More recently, however, opticalsights and mounts have become more common in the industry, with mostafter-market scopes being mounted to receivers because the scope is heldcloser to the eye, and, typically, there is no need for the additionalcomplexity or weight of a cantilever. Forward mounted (long eye-relief)scopes are also available, such as unity power red dot scopes, and areparticularly suited for some fixed-barrel rifle applications.

However, take-down or break-down rifles, such as certain models of theRuger 10/22 or others, typically exhibit more tolerance stack-up and/orrelative movement between the receiver and the barrel than do fixedbarrel rifles, due to the take-down feature itself, thus requiring moretime and effort to properly sight in and/or exhibiting changes over time(for example, due to variations in temperature, components looseningafter use, etc.). In some cases, after market barrels may be attached,or existing barrels may be modified by a gunsmith so as to provide afastening feature in the barrel itself, to which a scope mount may beattached.

Similarly, some systems, such as the Steyr AUG, have what are commonlyreferred to as “quick change” barrels. These systems readilyreconfigurable with different length barrels, so as to function as alight support weapon, rifle, carbine, or submachinegun, and differentcalibers (with other associated parts swapped). These are reallytakedown rifles even though they are not typically recognized as such,and may have some challenges similar to those previously describedabove.

Although these arrangements are generally functional, there remains aneed for a reliable and accurate no-gunsmithing means for attaching anafter-market accessory or scope to a barrel for a take-down rifle orother weapons.

SUMMARY

An exemplary firearm accessory mount for a take-down rifle is described.The exemplary mount has a first portion having an accessory interface,and a second portion opposing the first portion. The second portion hasa locking block with a proximal end and a distal end, the proximal endshaped and positioned to engage a receiver assembly of the take-downrifle. At least one of the first portion or the second portion has abarrel engagement surface.

An exemplary method of attaching a firearm accessory mount to atake-down rifle includes providing a mount, the mount having a firstportion having an accessory interface, and a second portion opposing thefirst portion, the second portion having a locking block with a proximalend and a distal end, the proximal end shaped and positioned to engage areceiver assembly of the take-down rifle, wherein at least one of thefirst portion or the second portion has a barrel engagement surface. Themethod also includes positioning the first portion partially about abarrel of the take-down rifle. The method also includes positioning thesecond portion partially about the barrel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a take-down rifle with an exemplarymount;

FIG. 2 is a perspective partially exploded view of the assembly in FIG.1;

FIG. 3 is a perspective exploded view of the assembly in FIG. 1;

FIG. 4 is another perspective view some components of the assembly inFIG. 1;

FIG. 5 is a perspective view of the mount in FIG. 1;

FIG. 5A is a side section view of the mount in FIG. 1 on a barrel;

FIG. 6 is a top view of the mount in FIG. 5;

FIG. 7 is a distal end view of the mount in FIG. 5;

FIG. 8 is a bottom view of the mount in FIG. 5;

FIG. 9 is a first side view of the mount in FIG. 5;

FIG. 10 is a proximal end view of the mount in FIG. 5;

FIG. 11 is a second side view of the mount in FIG. 5;

FIG. 12 is an end perspective view of the mount in FIG. 5;

FIG. 13 is a detailed view of some components of the assembly in FIG. 1;

FIG. 14 is a perspective view of an exemplary mount on a take-down riflehaving a bull barrel;

FIG. 15 is another perspective view of the assembly in FIG. 14;

FIG. 16 a perspective view of the mount in FIG. 14;

FIG. 16A is a side view of the mount and barrel in FIG. 14;

FIG. 17 is a perspective view of the mount in FIG. 14;

FIG. 18 is a top view of the mount in FIG. 14;

FIG. 19 is a bottom view of the mount in FIG. 14;

FIG. 20 is a perspective view of the mount in FIG. 14;

FIG. 21 is a side section view of the mount in FIG. 14;

FIG. 22 is a flowchart of an exemplary method; and

FIG. 23 is a flowchart of an exemplary method.

DETAILED DESCRIPTION

Before describing in detail the features of an accessory or scope mountand method disclosed herein, a high level introduction may be useful. Aspreviously mentioned herein, take-down rifles may, by their very nature,exhibit a level of movement between the receiver and the barrel that isnot exhibited in typical fixed barrel rifles. Therefore, scope mountsprovided on the receiver of take-down rifles may require repeatedzeroing or sighting in, and/or more time to properly zero or sight in,as compared to other rifles. As will be described herein, Applicantsprovide in some embodiments a new and innovative scope mount that allowsusers to use no-gunsmithing means and methods to attach an after-marketscope mount to the barrel of the rifle, while maintaining an excellentlevel of sighting accuracy.

For the purpose of this document, the term “no-gunsmithing” shall beunderstood to mean “no-machining”. For example, disassembling orreassembling a firearm is not considered “gunsmithing” for the purposeof this document; in contrast, machining the barrel of a firearm isconsidered “gunsmithing” for the purpose of this document.

Referring now to the drawings, where like or similar elements aredesignated with identical reference numerals throughout the severalviews, and referring in particular to FIG. 1, and FIGS. 1-13 generally,shown is a take-down firearm assembly 100 having a receiver 102, abarrel 104 removably coupled to the receiver 102 (see e.g. FIG. 4), afirearm stock 106 removably coupled to the receiver 102, and a forendassembly 108 removably coupled to the stock 106. Of note, the firearmassembly 100 illustrated in FIGS. 1-4 is identical to the firearmassembly 200 illustrated in FIGS. 14-15, but with a tapered barrel 104or a straight barrel 204 respectively. Those skilled in the art willrecognize that 10/22 rifles may be interoperable with a number of barrelsizes and shapes.

Continuing with FIG. 1, an accessory mount 110 is also illustrated, andmay be removably coupled to the barrel 104. Of note, the accessory mount110, 210 (see also FIG. 14) described herein may be configured foroperability with only one or more than one barrel type.

Turning now to FIG. 5, the accessory mount 110 may have an accessoryinterface 111, such as a Picatinny rail as illustrated, or any otheraccessory mount, such as any standardized scope interface now known oras yet to be developed, an M-LOK or other proprietary or free licensemodular mounting system, or a mounting system for a laser sight, aflashlight, optical sights, backup iron sights and/or other accessories.

Continuing with FIG. 5, the accessory mount 110 may be a no-gunsmithingfirearm accessory mount for a take-down rifle. The mount 110 may have afirst portion 122 having an accessory interface 111, and a secondportion 124 opposing the first portion 122. The second portion may havea locking block 132, or block 132 for short, with a proximal end 144 anda distal end 146, the proximal end 144 shaped and positioned to engage areceiver assembly 148 of the take-down rifle 144. At least one of thefirst portion 122 or the second portion 124 has a barrel engagementsurface 120, 150. That is, a portion of one or both the first or secondportions 122, 124 may abut the barrel. The barrel engagement surface 120may be referenced herein as a support surface 120. For the purpose ofthis document, a receiver assembly 148 shall be understood to mean thatportion of a rifle that remains when a barrel assembly is removed from atake-down rifle, as illustrated in FIG. 3. The receiver assembly 148 mayinclude the receiver and other components. In some embodiments, thefirst portion 122 may be removably coupled to the second portion 124 asillustrate in FIG. 5; however, those skilled in the art will recognizethat the first portion 122 and second portion 124 may be unitary, asillustrated in FIG. 16. Those skilled in the art will also recognizethat the first and second portions 122, 124 may be unitary and encirclethe barrel, or adjustable relative to each other.

The accessory mount 110 may also have a recess 130 or passage forreceiving or at least partially encircling a barrel 104 of a firearm, aswell as a barrel support surface 120 for abutting the barrel 104 and/oraligning the accessory mount 110 with the barrel 104. Where the firearmhas a tapered barrel 104, the support surface 120 or a portion of thebarrel support surface 120 may be appropriately angled relative to thelongitudinal axis L, and/or the barrel support surface 120 may be angledrelative to and curved relative to the longitudinal axis L. Thoseskilled in the art will recognize, however, that, even where the barrel104 is tapered, a support surface 120 that is flat and/or parallel tothe longitudinal axis L may be used, as illustrated in FIG. 5A. That is,in some embodiments, even where the firearm 100 has a tapered barrel104, the accessory mount 110 may have a support surface 120 that isparallel to the longitudinal axis L, so as to engage an interface on thebarrel 104 that is also parallel to the longitudinal axis L; forexample, in some cases, the firearm 100 may have a tapered barrel 104and an interface parallel with the longitudinal axis L. In someembodiments, the support surface 120 may be angled relative to thelongitudinal axis L to engage an angled or tapered interface on astraight or bull barrel 204. The longitudinal axis L, also known as thebore axis to those skilled in the art, may be defined by a firingdirection of the rifle 100, 200. Those skilled in the art willunderstand that the barrel support surface 120 may or may not extend theentire longitudinal length of the accessory mount 110.

Those skilled in the art will also understand that, in some embodiments,or where the barrel 204 is a straight or bull barrel, the supportsurface 220 (see e.g. FIGS. 14, 17) may be substantially parallel to thelongitudinal axis L, and may be substantially planar or curved relativeto the barrel 204 or longitudinal axis L.

Those skilled in the art will readily recognize that the support surface120, 220 may be a raised, recessed, angled, rounded, or flat surfacethat is shaped to abut the barrel 104, 204 at a predetermined locationand/or to apply a compressive force about the barrel 104, 204, incoordination with an opposing surface of the recess 130, so as tointroduce additional rigidity to the firearm assembly 100, 200.

With reference to FIGS. 5A, 16A, and 21, the accessory mount 110, 210may include a block 132 with a first recess 136 for receiving a lockingplunger 140 (see FIG. 16A) and a second recess 118 for receiving alocking lever 142. The block 132 may also have a tab 134 (see e.g. FIGS.6, 19) to assist in aligning the accessory mount 110, 210 with thereceiver 102, in a manner similar to that known in relation tocurrently-available locking blocks. Those skilled in the art willrecognize that the locking lever 142 is generally a tab that may extenddownward, and is movable longitudinally to allow a user to manipulatethe locking plunger 140 during attachment and removal of the barrel 104,204, in a manner commonly known in the industry. In some embodiments,the accessory mount 110, 210 may include the block 132, the lockingplunger 140, and/or the locking lever 142 (see e.g. FIG. 16A). In someembodiments, the accessory mount 110, 210 may include components makingup a lockup mechanism or replacing a lockup function of OEM 10/22takedown rifles.

That is, the accessory mount 110, 210 may be integrated into a lockupmechanism (those components that lock the barrel 104, 204 to thereceiver 102) for a detachable barrel 104, 204. The first recess 136 mayhave a longitudinal depth that is greater than a width, while the secondrecess 118 may include a passage into the first recess 136 as is knownin currently-available lockup mechanisms for take-down rifles. Thesecond recess 118 may be transverse relative to the first recess 136.

The accessory mount 110, 210 may also have a recess 116 or passage forreceiving a fastener (not illustrated) to couple a forend 108 to theaccessory mount 110, 210.

Returning now to FIG. 5, the accessory mount 110 may have a firstportion 122 removably coupled to a second portion 124 to form the recess130 or passage therebetween. The second portion 124 may be shaped toprovide a lockup function between the accessory mount 110 and thereceiver 102 as previously described herein.

In some embodiments, the first portion 122 and second portion 124 may becoupled together at one or more fastening points 126, before or afterthe rest of the accessory mount 110 is attached to the assembly 100. Thefastening points 126 may include threaded recesses or passages forreceiving one or more threaded fasteners (not illustrated). That is, insome embodiments, the first and second portions 122, 124 may be coupledtogether about the barrel 104 after the barrel 104 is attached to thereceiver 102, or, in some embodiments, the first and second portions122, 124 may be coupled together prior to attaching the accessory mount110 to the barrel 104.

As illustrated most clearly in FIG. 5A and FIG. 21, the accessory mount110, 210 may have one or more recesses 112, 114 for receiving fasteners(not illustrated) to couple the accessory mount 110 to the barrel 104.In some embodiments, the recesses 112, 114 and fasteners (notillustrated) allow for adjustment of the accessory mount 110 relative tothe barrel 104, such as for aligning the accessory mount 110, 210.

In some embodiments, the accessory mount 110, 210 is shaped to maintainan air gap between the barrel 104, 204 and most portions of theaccessory mount 110, 210. In some embodiments, the block 132 may act asa heat sink for the regions of the accessory mount 110, 210 that docontact the barrel 104, 204. In some embodiments, the overall height ofthe accessory interface 111 may be selected so as to allow for mountingthe accessory mount 110, 210 and/or sighting in using the factory ironsights. A groove 113 in the accessory interface 111 (such as a groove inan otherwise standard Picatinny rail) may be provided to allow forsighting down the factory iron sights as mounted to the barrel, asillustrated in FIG. 5.

In some embodiments, and as most clearly illustrated in FIG. 7, theaccessory mount 110, 210 may include a recess 115 shaped and positionedso as to provide a gap between the barrel 104, 204 and the accessorymount 110, 210, to allow for variances in the barrel 104, 204. Therecess 115 may be a portion of the recess 130 or passage. The recess 115may also prevent surface wear from the accessory mount 110, 210potentially clamping or hitting against another portion of the barrel104, 204.

In some embodiments, the height of the accessory interface 111 isselected to match a standard receiver rail height (similar to AR-15handguard rails matching with the receiver making essentially onecontinuous rail). In some embodiments, the recess 115 and gap areprovided so as to accommodate different barrel types and/or barrelmanufacturing inconsistencies. In some embodiments, the recess 115 andgap are provided so as to enable iron sight compatibility. In someembodiments, the recess 115 and gap are provided to ensure a matchingrail height for inline sighting systems or rail-mounted backup sights.

In some embodiments, the accessory mount 210 is shaped to minimizecontact with the barrel 104, 204. For example, as illustrated in FIGS.14-21, the accessory mount 210 may not completely encircle the barrel104, 204, but may instead have a substantially C-shape, so as to onlypartially encircle the barrel 104, 204. Those skilled in the art willreadily recognize that this feature may apply to both tapered and bullor straight barrels 104, 204. In some embodiments, the accessoryinterface 111 is configured to align a scope to a night vision accessorypositioned in front of or behind the accessory mount 110, 210. In someembodiments, the accessory interface 111 may be an interface for a nightvision device, and a scope may be positioned behind the accessory mount110.

In some embodiments, the accessory mount 110, 210 is configured tofunction with more than one barrel type. In some embodiments, theaccessory mount 110, 210 is configured to function with both a straightbarrel 204 and a tapered barrel 104. In some embodiments, the accessorymount 110, 210 is configured to function with a firearm 100, 200 havinga reversible barrel tray 109 (see e.g. FIG. 1 and FIG. 15).

Turning now to FIG. 22, a method 2200 of modifying a take-down rifledescribed herein may include removing 2202 an OEM locking block from thebarrel. Removing 2202 may include removing at least one threadedfastener coupling the OEM locking block to a threaded recess in thebarrel. The method 2200 may include coupling 2204 a scope mount (e.g.accessory mount 110, 210 previously described herein) to the barrel bycausing at least one threaded fastener to engage a threaded recess inthe barrel, wherein the threaded recess is configured to engage athreaded fastener for attaching an OEM locking block. The method 2200may also include at least partially inserting a locking plunger and alocking lever in a block in the scope mount. The method 2200 may beachieved using an OEM Ruger 10/22 takedown rifle and the accessory mount110, 210 previously described herein with reference to FIGS. 1-21.

The method 2200 may also include coupling 2208 the barrel and scopemount to a receiver. Coupling 2208 the barrel and scope mount to areceiver may include moving a locking lever positioned at leastpartially in the block in the scope mount. The method 2200 may alsoinclude decoupling 2210 the barrel and scope mount from the receiver bymoving the locking lever that is at least partially positioned in theblock of the scope mount.

The method 2200 may also include coupling 2212 a forend to the barrel.Coupling 2212 the forend to the barrel may include threading a threadedfastener into a threaded recess in the block of the scope mount. Thatis, the method 2200 may include coupling a forend to the scope mount,such as by using a rotatable fastener. Coupling 2212 a forend to thebarrel may include adjusting a bedding or barrel tray in the forend asdescribed in commonly assigned U.S. Pat. No. 9,322,611, issued on Apr.26, 2016, to Barfoot et al., the contents of which are fullyincorporated herein by reference.

Turning now to FIG. 23, a no-gunsmithing method 2300 of attaching afirearm accessory mount to a take-down rifle is described. The method2300 includes providing 2302 a no-gunsmithing mount, the mount having afirst portion having an accessory interface, and a second portionopposing the first portion, the second portion having a locking blockwith a proximal end and a distal end, the proximal end shaped andpositioned to engage a receiver assembly of the take-down rifle, whereinat least one of the first portion or the second portion has a barrelengagement surface. The method 2300 may include positioning 2304 thefirst portion partially about a barrel of the take-down rifle. Themethod 2300 may also include positioning 2306 the second portionpartially about the barrel. The method 2300 may be achieved using an OEMRuger 10/22 takedown rifle and the accessory mount 110, 210 previouslydescribed herein with reference to FIGS. 1-21.

The terms and expressions employed herein are used as terms andexpressions of description and not of limitation, and there is nointention, in the use of such terms and expressions, of excluding anyequivalents of the features shown and described or portions thereof. Inaddition, having described certain embodiments, it will be apparent tothose of ordinary skill in the art that other embodiments incorporatingthe concepts disclosed herein may be used without departing from thespirit and scope of the disclosure. Accordingly, the describedembodiments are to be considered in all respects as only illustrativeand not restrictive.

Each of the various elements disclosed herein may be achieved in avariety of manners. This disclosure should be understood to encompasseach such variation, be it a variation of an embodiment of any apparatusembodiment, a method or process embodiment, or even merely a variationof any element of these. Particularly, it should be understood that thewords for each element may be expressed by equivalent apparatus terms ormethod terms—even if only the function or result is the same. Suchequivalent, broader, or even more generic terms should be considered tobe encompassed in the description of each element or action. Such termscan be substituted where desired to make explicit the implicitly broadcoverage to which this disclosure is entitled.

As but one example, it should be understood that all action may beexpressed as a means for taking that action or as an element whichcauses that action. Similarly, each physical element disclosed should beunderstood to encompass a disclosure of the action which that physicalelement facilitates. Regarding this last aspect, by way of example only,the disclosure of an actuator should be understood to encompassdisclosure of the act of actuating—whether explicitly discussed ornot—and, conversely, were there only disclosure of the act of actuating,such a disclosure should be understood to encompass disclosure of anactuating mechanism. Such changes and alternative terms are to beunderstood to be explicitly included in the description.

The previous description of the disclosed embodiments and examples isprovided to enable any person skilled in the art to make or use thepresent disclosure as defined by the claims. Thus, the presentdisclosure is not intended to be limited to the examples disclosedherein. Various modifications to these embodiments will be readilyapparent to those skilled in the art, and the generic principles definedherein may be applied to other embodiments without departing from thespirit or scope of the invention as claimed.

What is claimed is:
 1. A firearm accessory mount for a take-down rifle,comprising: a first portion having an accessory interface; and a secondportion opposing the first portion, the second portion having a lockingblock with a proximal end and a distal end, the proximal end having alongitudinal tab and the proximal end shaped and positioned to engage areceiver assembly of the take-down rifle; wherein at least one of thefirst portion or the second portion has a non-threaded barrel engagementsurface.
 2. The mount of claim 1, wherein: the first portion is shapedto partially encircle a barrel of the take-down rifle; and the secondportion is shaped to partially encircle the barrel.
 3. The mount ofclaim 2, wherein: the locking block has at least one of a first recessfor receiving a locking plunger or a second recess for receiving alocking lever.
 4. The mount of claim 1, wherein: the locking block hasat least one of a first recess for receiving a locking plunger or asecond recess for receiving a locking lever.
 5. The mount of claim 1,wherein: the first portion is removably couplable to the second portion.6. The mount of claim 5, wherein: the first portion is removably coupledto the second portion, whereby the first and second portions are shapedto encircle the barrel.
 7. The mount of claim 1, further comprising: afirst fastener removably coupling the locking block to the barrel of thefirearm.
 8. The mount of claim 7, further comprising: a second fastenerremovably coupling the first portion to the second portion.
 9. The mountof claim 7, wherein: the first fastener is positioned more proximal tothe proximal end than to the distal end.
 10. The mount of claim 1,further comprising: a plurality of fasteners for coupling the firstportion and the locking block to the barrel.
 11. A method of attaching afirearm accessory mount to a take-down rifle, comprising: providing amount, the mount having a first portion having an accessory interface,and a second portion opposing the first portion, the second portionhaving a locking block with a proximal end and a distal end, theproximal end having a longitudinal tab and the proximal end shaped andpositioned to engage a receiver assembly of the take-down rifle, whereinat least one of the first portion or the second portion has a barrelengagement surface; positioning the first portion partially about anon-threaded portion of a barrel of the take-down rifle; and positioningthe second portion partially about the barrel.
 12. The method of claim11, further comprising at least one of: moving a locking leverproximally or distally to adjust a position of a locking plungerproximally or distally, the locking plunger movable in a first recess ofthe locking lever, and the locking lever movable in a second recess ofthe locking lever.
 13. The method of claim 11, wherein: the lockingblock has a first recess for receiving a locking plunger and a secondrecess for receiving a locking lever; and the method further comprisessliding the locking lever proximally or distally in the second recess tomove the locking plunger.
 14. The method of claim 11, furthercomprising: removably coupling the first portion to the second portion.15. The method of claim 14, further comprising: causing the first andsecond portions to encircle the barrel.
 16. The method of claim 11,further comprising: removably coupling the locking block to the barrelof the firearm.
 17. The method of claim 16, further comprising:removably coupling the first portion to the second portion.
 18. Themethod of claim 16, further comprising: the removably coupling thelocking block comprises using a first fastener positioned more proximalto the proximal end than to the distal end.
 19. The method of claim 11,further comprising: using a plurality of fasteners to couple the firstportion and the locking block to the barrel.
 20. The method of claim 11,further comprising: causing the locking block to engage a receiverassembly of the take-down rifle to align the mount to the receiver. 21.A firearm accessory mount for a take-down rifle, comprising: a firstportion having an accessory interface; and a second portion opposing thefirst portion, the second portion having a locking block with a proximalend and a distal end, the proximal end shaped and positioned to engage areceiver assembly of the take-down rifle, the locking block furtherhaving at least one of a first recess for receiving a locking plunger ora second recess for receiving a locking lever; wherein at least one ofthe first portion or the second portion has a barrel engagement surface.22. The mount of claim 21, wherein: the first portion is shaped topartially encircle a barrel of the take-down rifle; and the secondportion is shaped to partially encircle the barrel.
 23. The mount ofclaim 21, wherein: the proximal end of the locking block comprises a tabfor engaging the receiver assembly.
 24. The mount of claim 21, wherein:the first portion is removably couplable to the second portion.
 25. Themount of claim 24, wherein: the first portion is removably coupled tothe second portion, whereby the first and second portions are shaped toencircle the barrel.
 26. The mount of claim 21, further comprising: afirst fastener removably coupling the locking block to the barrel of thefirearm.
 27. The mount of claim 26, further comprising: a secondfastener removably coupling the first portion to the second portion. 28.The mount of claim 26, wherein: the locking block has a tab positionedon the proximal end; and the first fastener is positioned more proximalto the proximal end than to the distal end.
 29. The mount of claim 21,further comprising: a plurality of fasteners for coupling the firstportion and the locking block to the barrel.